CQuestion 7 of 101.0 PointsConsider the following scenario in answering questions 5 through 7.In an article appearing in Today’s Health a writer states that the average number of calories in a serving of popcorn is 75. To determine if the average number of calories in a serving of popcorn is different from 75, a nutritionist selected a random sample of 20 servings of popcorn and computed the sample mean number of calories per serving to be 78 with a sample standard deviation of 7.At the α= .05 level of significance, does the nutritionist have enough evidence to reject the writer’s claim?
AQuestion 8 of 101.0 PointsConsider the following in answering questions 8 through 10.A lab technician is tested for her consistency by taking multiple measurements of cholesterol levels from the same blood sample. The target accuracy is a variance in measurements of 1.2 or less. If the lab technician takes 16 measurements and the variance of the measurements in the sample is 2.2, does this provide enough evidence to reject the claim that the lab technician’s accuracy is within the target accuracy?State the null and alternative hypotheses.